您好，欢迎访问中国水产科学研究院 机构知识库！
中国水产科学研究院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Optimal submerged macrophyte coverage for improving water quality in a temperate lake in China

文献类型： 外文期刊

作者： Zhang, Xiaoke 1 ; Zhang, Junwang 1 ; Li, Zhifei 1 ; Wang, Guangjun 1 ; Liu, Yang 1 ; Wang, Huili 2 ; Xie, Jun 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Pearl River Fisheries Res Inst, Key Lab Trop & Subtrop Fishery Resource Applicat, Guangzhou 510380, Peoples R China

2.Anqing Normal Univ, Res Ctr Aquat Organism Conservat & Water Ecosyst, Coll Life Sci, Anqing 246133, Peoples R China

3.Guangdong Ecol Remediat Aquaculture Pollut Res Ct, Guangzhou 510380, Peoples R China

关键词： Submerged macrophytes; Optimal coverage; Water quality; Ecological restoration; Shallow lakes

期刊名称：ECOLOGICAL ENGINEERING （ 影响因子：3.512； 五年影响因子：3.844 ）

ISSN： 0925-8574

年卷期： 2021 年 162 卷

页码：

收录情况： SCI

摘要： Submerged vegetation is essential for maintaining a clear water state in shallow lakes. To determine the optimal submerged macrophyte coverage required to improve water quality, field investigations and a simulation experiment were carried out in a sub-lake of Baiyangdian Lake, China. The effects of two seasons and five submerged macrophyte coverage gradients (0 [C-0], 25 [C-25], 50 [C-50], 75 [C-75], and 90% [C-90]) were examined in the field study, while the five submerged macrophyte coverage gradients were examined in an 80 day simulation experiment. In the field study, plant coverage, season, and their interaction all had a significant effect on most physicochemical parameters. Compared with C-0, the Secchi depth and pH of the water were higher, while the total nitrogen and total phosphorus concentrations were lower when submerged vegetation was present. Lowest values of total nitrogen, total phosphorus, and conductivity all appeared under C-50. Meanwhile, in the simulation experiment, the total nitrogen content decreased by 76.43, 90.98, 88.28 and 84.32%, and the total phosphorus content decreased by 85.15, 88.48, 87.76 and 79.00% at C-25, C-50, C-75 and C-90 compared with C-0, respectively. Moreover, plant coverage and time had a significant effect on all eight physiochemical parameters. There were no significant differences in the total nitrogen content among C-50, C-75 and C-90, but values were significantly lower than at C-0 and C-25. In contrast, the total phosphorus content was significantly higher at C-0 than all other groups, and the lowest value was observed at C-50. Overall, these findings suggest that 50% is the optimal submerged macrophyte coverage for improvements in water quality in temperate shallow lakes.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国水产科学研究院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台